New Article: Predicting GPU Performance for AMD and Nvidia

Article: Predicting AMD and Nvidia GPU Performance
By: David Kanter (dkanter.delete@this.realworldtech.com), April 12, 2011 10:42 pm
Room: Moderated Discussions
PiedPiper (jamesdgwise@gmail.com) on 4/13/11 wrote:
---------------------------
>Another good article, and i definitely like the idea of more regular smaller, and
>as a result simpler/easier to understand,
>articles.
>
>A good if somewhat basic analysis of modern GPU's.
>I'm interested as to weather or not you did any testing / theorizing that took
>into account memory bandwidth, prior to ignoring that >factor?

Absolutely. I decided that I didn't have the time or word count to really deal with it adequately. Bandwidth matters, but one step at a time.

>I cant help but think *purely guessing though* that if you added a scaling factor
>that accounted for differences in memory bandwidth, that your results might be even
>more accurate, especially when generalizing from the >laptop to the desktop version of the cards.

That's definitely true, and the models I use for myself include memory bandwidth. But as I said in the article - it's more complicated, harder to visualize and really just beyond the scope of what I wanted to do.

>EG. Memory bandwidth / number of processing cores
>( or maybe establish a baseline memory Bandwidth for each >model of GPU, and then compare against that....
>
>Also interested as to why you chose notebookcheck.net as >your data source? Why
>not use Anand/Hardocp/techreport and compare desktop GPU's?

Of the three you mentioned, I only really trust data from Scott @ TR. Unfortunately, Scott doesn't use 3DMark, and I didn't want to use a real game (for a variety of reasons which might become clear later). Moreover, none of them put their data into a form that is readily usable.

>Oh and i would have been interested to see results from the new VLIW4 ati cards,
>even if the are outliers and represent a different >architecture.

There were only 2 data points, which is the bare minimum needed for any sort of analysis. I'm just not very comfortable doing any sort of modeling with that little data. Perhaps in the future though...

David
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TopicPosted ByDate
New Article: Predicting GPU Performance for AMD and NvidiaDavid Kanter2011/04/11 11:55 PM
  Graph is not red-green colorblind friendly (NT)RatherNotSay2011/04/12 03:51 AM
    FixedDavid Kanter2011/04/12 08:46 AM
  New Article: Predicting GPU Performance for AMD and NvidiaJames2011/04/12 12:30 PM
    New Article: Predicting GPU Performance for AMD and NvidiaDavid Kanter2011/04/12 02:51 PM
  Try HD6450 or HD6850EduardoS2011/04/12 03:31 PM
    Try HD6450 or HD6850David Kanter2011/04/13 10:25 AM
      Try HD6450 or HD6850EduardoS2011/04/13 03:20 PM
        of causeMoritz2011/04/14 08:03 AM
          of causeEduardoS2011/04/14 01:55 PM
            Barts = 5DMoritz2011/04/14 09:26 PM
              Barts = 5DAntti-Ville Tuunainen2011/04/15 12:38 AM
                Limiting fixed function unitsMoritz2011/04/15 04:28 AM
                  Limiting fixed function unitsVincent Diepeveen2011/04/20 02:38 AM
                    lack of detailMoritz2011/04/20 09:24 AM
                      lack of detailEduardoS2011/04/20 11:45 AM
            gpgpuVincent Diepeveen2011/04/16 02:10 AM
              gpgpuEduardoS2011/04/17 12:31 PM
                gpgpuGroo2011/04/17 12:58 PM
                  gpgpuEduardoS2011/04/17 01:08 PM
                  gpgpuIan Ameline2011/04/18 03:55 PM
                    gpgpuPing-Che Chen2011/04/19 12:59 AM
                      GPU numerical complianceSylvain Collange2011/04/19 11:38 AM
                        GPU numerical complianceVincent Diepeveen2011/04/20 02:17 AM
                gpgpuVincent Diepeveen2011/04/20 02:02 AM
                  gpgpu and core countsHeikki Kultala2011/04/20 04:41 AM
                    gpgpu and core countsVincent Diepeveen2011/04/20 05:52 AM
                      gpgpu and core countsnone2011/04/20 07:05 AM
                        gpgpu and core countsEduardoS2011/04/20 11:36 AM
                      gpgpu and core countsHeikki Kultala2011/04/20 10:16 AM
                        gpgpu and core countsEduardoS2011/04/20 11:34 AM
                          gpgpu and core countsHeikki Kultala2011/04/20 07:24 PM
                            gpgpu and core countsEduardoS2011/04/20 08:55 PM
                              gpgpu and core countsHeikki Kultala2011/04/21 06:48 AM
                                gpgpu and core countsEduardoS2011/04/22 01:41 PM
                              AMD Compute and Texture FetchDavid Kanter2011/04/21 10:42 AM
                                AMD Compute and Texture FetchVincent Diepeveen2011/04/22 01:14 AM
                                  AMD Compute and Texture FetchDavid Kanter2011/04/22 10:53 AM
                                AMD Compute and Texture FetchEduardoS2011/04/22 01:46 PM
                                  AMD Compute and Texture FetchDavid Kanter2011/04/22 02:02 PM
                                    AMD Compute and Texture FetchEduardoS2011/04/22 02:18 PM
                                    AMD Compute and Texture Fetchanon2011/04/22 03:30 PM
                                      AMD Compute and Texture FetchDavid Kanter2011/04/22 09:17 PM
                        gpgpu and core countsVincent Diepeveen2011/04/20 12:12 PM
                          gpgpu and core countsHeikki Kultala2011/04/21 10:23 AM
                            gpgpu and core countsVincent Diepeveen2011/04/22 02:11 AM
                              Keep the crazy politics out of thisDavid Kanter2011/04/22 08:39 AM
                                Keep the crazy politics out of thisVincent Diepeveen2011/04/22 09:12 AM
                                  Keep the crazy politics out of thisDavid Kanter2011/04/22 10:44 AM
                              gpgpu and core countsJouni Osmala2011/04/22 11:06 AM
                  gpgpuEduardoS2011/04/20 11:59 AM
                    gpgpuVincent Diepeveen2011/04/20 12:37 PM
                      gpgpuEduardoS2011/04/20 05:27 PM
                        gpgpuVincent Diepeveen2011/04/21 02:06 AM
                          gpgpuEduardoS2011/04/22 02:00 PM
  New Article: Predicting GPU Performance for AMD and NvidiaPiedPiper2011/04/12 10:05 PM
    New Article: Predicting GPU Performance for AMD and NvidiaDavid Kanter2011/04/12 10:42 PM
      New Article: Predicting GPU Performance for AMD and NvidiaMS2011/04/15 05:04 AM
        New Article: Predicting GPU Performance for AMD and NvidiaKevin G2011/04/16 02:25 AM
          New Article: Predicting GPU Performance for AMD and NvidiaDavid Kanter2011/04/16 08:42 AM
          New Article: Predicting GPU Performance for AMD and NvidiaVincent Diepeveen2011/04/20 02:20 AM
    memoryMoritz2011/04/14 09:03 PM
      memory - moreMoritz2011/04/15 11:11 PM
  New Article: Predicting GPU Performance for AMD and NvidiaKevin G2011/04/14 11:30 AM
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